Replace DCHECK with conditional and error.

Replace DCHECK with conditional and error.

libfuzzer always finds a way to trigger these; thanks! This replaces
a discard helper DCHECK with a conditional failure.

BUG=717775
TEST=fuzzer doesn't check fail anymore.

Review-Url: https://codereview.chromium.org/2884383003
Cr-Commit-Position: refs/heads/master@{#472885}
Committed: https://chromium.googlesource.com/chromium/src/+/6548bcbdb7254440df8aab0fa8d9bc1dc179364e

[DaleCurtis, 2017-05-17 01:03:58]

dalecurtis@chromium.org changed reviewers:
+ chcunningham@chromium.org

[chcunningham, 2017-05-17 23:25:22]

lgtm

[DaleCurtis, 2017-05-18 00:12:41]

The CQ bit was checked by dalecurtis@chromium.org

[commit-bot: I haz the power, 2017-05-18 00:14:17]

CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-05-18 06:25:55]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2017-05-18 06:25:56]

Try jobs failed on following builders:
  win_chromium_x64_rel_ng on master.tryserver.chromium.win (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_x64_...)

[DaleCurtis, 2017-05-18 17:10:51]

The CQ bit was checked by dalecurtis@chromium.org

[commit-bot: I haz the power, 2017-05-18 17:11:44]

CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-05-18 18:42:08]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1495127451527710, "parent_rev":
"737c499089ee23d99d00924586570a25626da738", "commit_rev":
"6548bcbdb7254440df8aab0fa8d9bc1dc179364e"}

[commit-bot: I haz the power, 2017-05-18 18:42:20]

Description was changed from

==========
Replace DCHECK with conditional and error.

libfuzzer always finds a way to trigger these; thanks! This replaces
a discard helper DCHECK with a conditional failure.

BUG=717775
TEST=fuzzer doesn't check fail anymore.
==========

to

==========
Replace DCHECK with conditional and error.

libfuzzer always finds a way to trigger these; thanks! This replaces
a discard helper DCHECK with a conditional failure.

BUG=717775
TEST=fuzzer doesn't check fail anymore.

Review-Url: https://codereview.chromium.org/2884383003
Cr-Commit-Position: refs/heads/master@{#472885}
Committed:
https://chromium.googlesource.com/chromium/src/+/6548bcbdb7254440df8aab0fa8d9...
==========

[commit-bot: I haz the power, 2017-05-18 18:42:21]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/6548bcbdb7254440df8aab0fa8d9...